ive been reading about led matrix for a couple months now. i got 10 tb62708n off of ebay, and want to use them for a large led matrix (256) and was trying to figure out if i could. i dont under stand how if all the pins are postive pins, how do you put half to anode and half to cathode. I see that there is 4 V inputs for led voltage, can you put voltage to 2 and ground to 2 and do it that way. will the chip connect to ground, or must it be voltage. any articles or example that would point me in the right direction?